I'm not a lawyer either, but I believe that normal due process procedures in the U.S. include going to the police or FBI who can then obtain a search warrant fr

I'm not a lawyer either, but I believe that normal due process procedures in the U.S. include going to the police or FBI who can then obtain a search warrant from the jurisdictional court, and they can then examine the contents of the suspect's account. Apparently, MS didn't do that, but they probably could have. In any event, they did involve the FBI as evidenced by the FBI report linked by the article.